Retainer for sleep apnea



FIG. 1 is a bottom and side perspective view of the retainer for sleep apnea;

FIG. 2 is a bottom view of the top piece of the retainer for sleep apnea;

FIG. 3 is a front view of the retainer for sleep apnea;

FIG. 4 is a rear view of the retainer for sleep apnea; and,

FIG. 5 is a side view of the retainer for sleep apnea, the other side being a mirror image thereof.

The broken lines are included for the purpose of illustrating portions of the retainer for sleep apnea and form no part of the claimed design. 

CLAIM The ornamental design for the retainer for sleep apnea, as shown and described. 